Mounting mechanism for rotor core of synchronous reluctance motor
Through the installation mechanism of the butt column and the plug column, combined with the conical surface and the compressed inclined surface and the spring design, the problem of the nut loose when the rotor core of the synchronous reluctance motor rotates at high speed is solved, achieving stable fixation and safety improvement.
Patent Information
- Application Number
- CN202422168075.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-05
AI Technical Summary
In the prior art, the nut is easily loosened when the rotor core of the synchronous reluctance motor rotates at high speed, resulting in safety hazards.
The installation mechanism between the butt column and the plug-in column is adopted, and the one-time fixation is achieved through butt and threaded connection. The conical surface and the compressed slope are matched and the spring design are used to ensure that the plug-in rod cannot be loosened.
The stable fixation of the rotor core is achieved, the safety risks caused by loosening are avoided, and the installation stability and safety are ensured.
Smart Images
Figure CN223141763U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of the assembly of a rotor core, in particular to an installation mechanism for a rotor core of a synchronous reluctance motor. Background Art
[0002] The rotor core of a synchronous reluctance motor is formed by stacking a plurality of silicon steel sheets.
[0003] In the prior art, when the rotor is assembled, long bolts and nuts are required to fix the end plates and the silicon steel sheets. With the long-term use of the motor, especially when the rotor rotates at a high speed, the nuts are likely to become loose, causing potential safety hazards. Summary of the Utility Model
[0004] The purpose of the utility model is to provide an installation mechanism for a rotor core of a synchronous reluctance motor to solve the problems mentioned in the above background art.
[0005] To achieve the above purpose, the utility model provides the following technical solution: An installation mechanism for a rotor core of a synchronous reluctance motor, including a rotor core formed by stacking a plurality of silicon steel sheets, a main shaft assembled at the center of the rotor core and penetrating to the outside of both ends of the rotor core, a fixed end plate for clamping and limiting both ends of the rotor core is assembled on the outer wall of the thin shaft part of the main shaft, and the two fixed end plates clamp and limit both ends of the rotor core through an installation mechanism;
[0006] The installation mechanism includes a docking column and a plugging column. The docking column and the plugging column respectively penetrate from the outside of the two fixed end plates into the inside of the rotor core. Circular holes for inserting the docking column and the plugging column are opened inside the rotor core. A circular end is integrally formed at one end of the docking column located outside the fixed end plate, and a regular hexagon end is integrally formed at one end of the plugging column located outside the fixed end plate.
[0007] As a further scheme of the utility model: The installation mechanism further includes a plugging rod integrally formed with the other end of the plugging column. A connecting column is integrally formed at one end of the plugging rod away from the plugging column. A conical surface is provided at one end of the connecting column away from the plugging rod, and a clamping groove is recessed inward on the outer circumference of the plugging rod.
[0008] As a further scheme of the utility model: The installation mechanism further includes a plugging groove opened at one end of the docking column. Two fixed elliptical cylinders are symmetrically and fixedly connected to the inner wall of the plugging groove. A sliding column is axially slidably connected to the outer wall of the fixed elliptical cylinder. A clamping block is fixedly connected to one end of the sliding column away from the fixed elliptical cylinder. A pressure-receiving inclined surface is formed at one end of the clamping block close to the plugging rod.
[0009] As a further solution of the utility model: the conical surface in the contact state coincides with the pressed inclined surface, a spring is installed on the inner wall of the sliding column, and one end of the spring is fixedly connected with one end of the fixed elliptical column located inside the sliding column.
[0010] As a further solution of the utility model: internal threads are formed on the inner wall of the insertion slot, external threads are formed on the outer periphery of the insertion rod, and the internal threads are engaged with the external threads.
[0011] As a further solution of the utility model: copper bars are inserted into the inner circumference of the rotor core at equal intervals in the circumferential direction. Both ends of the copper bars are bent and welded to the end face of the fixed end plate. Grooves for inserting the copper bars are formed inside the rotor core.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] By setting the installation mechanism, the installation mechanism is a one-time docking and fixing method. After being fixed, it cannot be loosened, which can not only achieve effective fixed installation, but also avoid safety risks caused by the loosening of the installation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a structural schematic diagram of the utility model;
[0015] Figure 2 is an internal structural schematic diagram of the utility model;
[0016] Figure 3 is a docking schematic diagram of the insertion column and the docking column of the utility model;
[0017] Figure 4 is an internal structural schematic diagram of the insertion column and the docking column of the utility model;
[0018] Figure 5 is the Figure 4 partial enlarged view at A of the utility model;
[0019] Figure 6 is an installation schematic diagram of the spring of the utility model.
[0020] In the figure: 1, rotor core; 2, copper bar; 3, main shaft; 4, fixed end plate; 5, end; 6, docking column; 7, insertion column; 8, insertion rod; 9, insertion slot; 10, connecting column; 11, conical surface; 12, clamping groove; 13, fixed elliptical column; 14, sliding column; 15, clamping block; 16, pressed inclined surface; 17, spring. DETAILED DESCRIPTION OF THE INVENTION
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1 to 6 , in the embodiment of the present utility model, an installation mechanism for a rotor core of a synchronous reluctance motor includes a rotor core 1 stacked by a plurality of silicon steel sheets. A main shaft 3 penetrating to the outside of both ends of the rotor core 1 is assembled at the center of the rotor core 1. A fixed end plate 4 for clamping and limiting both ends of the rotor core 1 is assembled on the outer wall of the thin shaft portion of the main shaft 3. The two fixed end plates 4 clamp and limit both ends of the rotor core 1 through the installation mechanism; the installation mechanism includes a docking column 6 and a plugging column 7. The docking column 6 and the plugging column 7 respectively penetrate from the outside of the two fixed end plates 4 into the inside of the rotor core 1. Circular holes for inserting the docking column 6 and the plugging column 7 are formed inside the rotor core 1. One end of the docking column 6 located outside the fixed end plate 4 is integrally formed with a circular end 5. One end of the plugging column 7 located outside the fixed end plate 4 is integrally formed with a regular hexagonal end 5.
[0023] In this embodiment: First, a plurality of silicon steel sheets are stacked to form the rotor core 1, and then it is docked with the main shaft 3. Then, the two fixed end plates 4 are inserted into the outer periphery of the thin shaft portion of the main shaft 3 and are attached to both ends of the rotor core 1. After completion, the two parts of the installation mechanism are respectively inserted into the circular holes and are docked and tightened to complete the clamping and limiting of the two fixed end plates 4. The two clamped and limited fixed end plates 4 limit the rotor core 1.
[0024] Please pay special attention to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the installation mechanism further includes a plugging rod 8 integrally formed with the other end of the plugging column 7. One end of the plugging rod 8 away from the plugging column 7 is integrally formed with a connecting column 10. One end of the connecting column 10 away from the plugging rod 8 has a conical surface 11. A clamping groove 12 recessed inward is formed on the outer periphery of the plugging rod 8. The installation mechanism further includes a plugging groove 9 formed at one end of the docking column 6. Two fixed elliptical cylinders 13 are symmetrically and fixedly connected to the inner wall of the plugging groove 9. A sliding column 14 is axially slidably connected to the outer wall of the fixed elliptical cylinder 13. One end of the sliding column 14 away from the fixed elliptical cylinder 13 is fixedly connected with a clamping block 15. A pressure-receiving inclined surface 16 is formed at one end of the clamping block 15 close to the plugging rod 8.
[0025] In this embodiment: The docking post 6 inserted into the rotor core 1 through the circular groove is aligned with the end of the plug post 7. At this time, the plug rod 8 is aligned with the plug slot 9. Then, a wrench is docked with the end head 5 at one end of the plug post 7, and the end head 5 is driven to rotate by the wrench. At this time, the plug rod 8 is threadedly connected to the plug slot 9. During the tightening process of the plug rod 8, the plug rod 8 drives the connecting post 10 to move synchronously until the conical surface 11 contacts the compressed inclined surface 16. The compressed inclined surface 16 is stressed to drive the sliding post 14 to slide along the outer circumference of the fixed elliptical column 13 and squeeze the spring 17. As the plug rod 8 is tightened, the conical surface 11 is displaced from the compressed inclined surface 16 until the clamping block 15 is aligned with the clamping slot 12. At this time, the spring 17 resets and drives the clamping block 15 to snap into the clamping slot 12. At this time, the plug rod 8 is completely tightened and cannot be further tightened;
[0026] In this state, the cooperation between the clamping block 15 and the clamping slot 12 restricts the axial reset movement of the plug rod 8. Therefore, the plug rod 8 cannot be loosened, further ensuring the stability of the connection;
[0027] It should be noted that: During the rotation of the plug post 7, force should be applied to the end head 5 at the end of the docking post 6 to prevent the docking post 6 from rotating synchronously with the plug post 7 during the docking process.
[0028] Please refer specifically to Figure 5 , the conical surface 11 and the compressed inclined surface 16 in contact are fitted. A spring 17 is installed on the inner wall of the sliding post 14, and one end of the spring 17 is fixedly connected to one end of the fixed elliptical column 13 located inside the sliding post 14.
[0029] In this embodiment: When the conical surface 11 contacts the compressed inclined surface 16, an extrusion force will be generated on the compressed inclined surface 16. This extrusion force causes the clamping block 15 to move, thereby realizing the sliding of the sliding post 14 along the outer circumference of the fixed elliptical column 13. Since the cross-section of the fixed elliptical column 13 is elliptical, the sliding post 14 can only slide relative to the fixed elliptical column 13 and cannot rotate relatively.
[0030] Please refer specifically to Figure 5 , internal threads are formed on the inner wall of the plug slot 9, and external threads are formed on the outer circumference of the plug rod 8. The internal threads and the external threads are engaged.
[0031] In this embodiment: The two can achieve the docking of the clamping block 15 and the clamping slot 12 during rotation through the threaded connection method, and the thread has self-locking property, which can avoid the problem of unsuccessful docking caused by the reaction force of the spring 17.
[0032] Please refer specifically to Figure 1 and Figure 2, copper bars 2 are inserted equidistantly in the inner circumference of the rotor core 1. The two ends of the copper bars 2 are bent and welded to the end face of the fixed end plate 4. Grooves for inserting the copper bars 2 are provided inside the rotor core 1.
[0033] In this embodiment: After the copper bars 2 are fixed, they play the role of cutting magnetic lines of force during the rotation of the rotor core 1.
[0034] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.
Claims
1. An installation mechanism for a rotor core of a synchronous reluctance motor, comprising a rotor core (1) stacked by a plurality of silicon steel sheets, characterized in that, A main shaft (3) passing through to the outside of both ends of the rotor core (1) is assembled at the center of the rotor core (1). A fixed end plate (4) for clamping and limiting both ends of the rotor core (1) is assembled on the outer wall of the thin shaft portion of the main shaft (3). The two fixed end plates (4) clamp and limit both ends of the rotor core (1) through an installation mechanism; The installation mechanism includes a docking column (6) and a plugging column (7). The docking column (6) and the plugging column (7) respectively penetrate from the outside of the two fixed end plates (4) into the inside of the rotor core (1). Circular holes for inserting the docking column (6) and the plugging column (7) are formed inside the rotor core (1). A circular end head (5) is integrally formed at one end of the docking column (6) located outside the fixed end plate (4). A regular hexagonal end head (5) is integrally formed at one end of the plugging column (7) located outside the fixed end plate (4).
2. The installation mechanism of a rotor core of a synchronous reluctance motor according to claim 1, characterized in that, The installation mechanism further includes a plugging rod (8) integrally formed with the other end of the plugging column (7). A connecting column (10) is integrally formed at one end of the plugging rod (8) away from the plugging column (7). A conical surface (11) is provided at one end of the connecting column (10) away from the plugging rod (8). A clamping groove (12) recessed inward is formed on the outer circumference of the plugging rod (8).
3. The installation mechanism of a rotor core of a synchronous reluctance motor according to claim 2, characterized in that, The installation mechanism further includes a plugging groove (9) formed at one end of the docking column (6). Two fixed elliptical cylinders (13) are symmetrically and fixedly connected to the inner wall of the plugging groove (9). A sliding column (14) is axially slidably connected to the outer wall of the fixed elliptical cylinder (13). A clamping block (15) is fixedly connected to one end of the sliding column (14) away from the fixed elliptical cylinder (13). A pressure-receiving inclined surface (16) is formed at one end of the clamping block (15) close to the plugging rod (8).
4. The mounting mechanism for the rotor core of a synchronous reluctance motor according to claim 3, characterized in that, The conical surface (11) and the pressure-receiving inclined surface (16) in contact state are in conformity. A spring (17) is installed inside the sliding column (14). One end of the spring (17) is fixedly connected to one end of the fixed elliptical cylinder (13) located inside the sliding column (14).
5. The installation mechanism of a rotor core of a synchronous reluctance motor according to claim 4, characterized in that, Internal threads are formed on the inner wall of the plugging groove (9), and external threads are formed on the outer circumference of the plugging rod (8). The internal threads and the external threads are engaged with each other.
6. The installation mechanism of a rotor core of a synchronous reluctance motor according to claim 1, characterized in that, Copper bars (2) are circumferentially and equidistantly plugged inside the rotor core (1). Both ends of the copper bars (2) are bent and welded to the end faces of the fixed end plates (4). Grooves for inserting the copper bars (2) are formed inside the rotor core (1).